Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 812 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.A town has 36700 people. The population grows by 8% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹34100 at 20% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
5. 5.A town has 58400 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹30000 at 12% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹16400 grow to in 2 years at 25% per year compound interest (in ₹)?
8. 8.A town has 21400 people. The population grows by 12% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹2000 at 15% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹38000 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹57500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹45500 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹41600 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹42000 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
16. 16.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
18. 18.A scooter is worth ₹15000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.Find the compound interest on ₹4800 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹51600 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹12400 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹8500 at 10% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
26. 26.What amount will ₹17600 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹7700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
28. 28.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
29. 29.A scooter is worth ₹9200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
30. 30.A town has 30100 people. The population grows by 10% every year. What will the population be after 2 years?
31. 31.A town has 19100 people. The population grows by 15% every year. What will the population be after 1 year?
32. 32.Find the compound interest on ₹17500 at 20% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹44900 at 12% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹53300 at 8% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹45900 at 10% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
39. 39.What amount will ₹29200 grow to in 1 year at 20% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹58600 at 8% per year for 1 year, compounded every year (in ₹).

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